void InitBinDir(const std::string& argv0) {
bool problem = false;
try {
// get this executable's path by following link
const size_t BUF_SIZE = 2048;
char buf[BUF_SIZE] = {0};
#ifdef __FreeBSD__
int mib[4];
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = -1;
size_t buf_size = sizeof(buf);
sysctl(mib, 4, buf, &buf_size, 0, 0);
#else
size_t exe_path_size = readlink("/proc/self/exe", buf, BUF_SIZE);
if (exe_path_size == static_cast<size_t>(-1)) {
problem = true;
} else {
if (exe_path_size >= BUF_SIZE || exe_path_size < 0)
exe_path_size = BUF_SIZE - 1; // ensure buffer isn't accessed out of range
buf[exe_path_size] = 0; // null terminate c-string
}
#endif
if (!problem) {
buf[BUF_SIZE - 1] = 0; // to be safe, else initializing an std::string with a non-null-terminated string could read invalid data outside the buffer range
std::string path_text(buf);
fs::path binary_file = fs::system_complete(fs::path(path_text));
bin_dir = binary_file.branch_path();
// check that a "freeorion" file (hopefully the freeorion binary) exists in the found directory
fs::path p(bin_dir);
p /= "freeorion";
if (!exists(p))
problem = true;
}
} catch (fs::filesystem_error err) {
problem = true;
}
if (problem) {
// failed trying to parse the call path, so try hard-coded standard location...
char* dir_name = br_find_bin_dir("/usr/local/bin");
fs::path p(dir_name);
std::free(dir_name);
// if the path does not exist, fall back to the working directory
if (!exists(p)) {
bin_dir = fs::initial_path();
} else {
bin_dir = p;
}
}
}
void XMLPathTraversalTest()
{
typedef std::map<std::basic_string<wchar_t>,
std::basic_string<wchar_t> > AttributesType;
TagElement<wchar_t> rootTag(L"root");
TagElement<wchar_t> childTag1(L"child1");
TagElement<wchar_t> childTag1_(L"child1");
TagElement<wchar_t> childTag2(L"child2");
StringElement<wchar_t> stringTag(L"string");
CommentElement<wchar_t> commentTag(L"comment");
rootTag.addChild(&childTag1);
rootTag.addChild(&childTag2);
rootTag.addChild(&childTag1_);
childTag1.addChild(&stringTag);
childTag1_.addChild(&commentTag);
CPPUNIT_ASSERT(rootTag.children.size() == 3);
CPPUNIT_ASSERT(dynamic_cast<TagElement<wchar_t>*>
(rootTag.getChildElement(L"child1"))->getTagName() ==
L"child1");
CPPUNIT_ASSERT(dynamic_cast<TagElement<wchar_t>*>
(rootTag.getChildElement(L"child2"))->getTagName() ==
L"child2");
std::vector<Element<wchar_t>*> result;
XMLPath<wchar_t> path_root(L"/root");
result = path_root.evaluate(&rootTag);
CPPUNIT_ASSERT(result.size() == 1);
CPPUNIT_ASSERT(result[0] == &rootTag);
XMLPath<wchar_t> path_roots(L"/root[]");
result = path_roots.evaluate(&rootTag);
CPPUNIT_ASSERT(result.size() == 1);
CPPUNIT_ASSERT(result[0] == &rootTag);
XMLPath<wchar_t> path_child1(L"/root/child1");
result = path_child1.evaluate(&rootTag);
CPPUNIT_ASSERT(result.size() == 1);
CPPUNIT_ASSERT(result[0] == &childTag1);
XMLPath<wchar_t> path_child1s(L"/root/child1[]");
result = path_child1s.evaluate(&rootTag);
CPPUNIT_ASSERT(result.size() == 2);
CPPUNIT_ASSERT(result[0] == &childTag1);
CPPUNIT_ASSERT(result[1] == &childTag1_);
XMLPath<wchar_t> path_text(L"/root/child1[]/#text");
result = path_text.evaluate(&rootTag);
CPPUNIT_ASSERT(result.size() == 1);
CPPUNIT_ASSERT(result[0] == &stringTag);
XMLPath<wchar_t> path_comment(L"/root/child1[]/#comment");
result = path_comment.evaluate(&rootTag);
CPPUNIT_ASSERT(result.size() == 1);
CPPUNIT_ASSERT(result[0] == &commentTag);
rootTag.removeChild(&childTag1);
rootTag.removeChild(&childTag2);
rootTag.removeChild(&childTag1_);
childTag1.removeChild(&stringTag);
childTag1_.removeChild(&commentTag);
}